Designation:C162−05(Reapproved2015)StandardTerminologyofGlassandGlassProducts1ThisstandardisissuedunderthefixeddesignationC162;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisterminologydefinestermsgenerallyusedintheglassindustry.1.2Insomecasesinwhichausageisspecifictoacertainindustry,thatisspelledoutwithinthedefinition.Forcomplete-nessandhistoricalpurposes,termsthatareoutdatedarelistedasbeingarchaic.Thereaderiscautionedthatsomecompaniesorindustriesmaydefineorusetermsdifferentlythanthewaythesetermsaredefinedwithinthisterminology.1.3OthersourcesofglassglossariesareGlassAssociationofNorthAmerica’sGlazingManual,2EngineeringStandardsManualforTemperedGlass,2LaminatedGlassDesignGuide,2andASTMCommitteeC-14standards.2.ReferencedDocuments2.1ASTMStandards:3C148TestMethodsforPolariscopicExaminationofGlassContainersC336TestMethodforAnnealingPointandStrainPointofGlassbyFiberElongationC338TestMethodforSofteningPointofGlassC598TestMethodforAnnealingPointandStrainPointofGlassbyBeamBendingC1048SpecificationforHeat-StrengthenedandFullyTem-peredFlatGlassC1172SpecificationforLaminatedArchitecturalFlatGlass3.TerminologyAbbévalue—thereciprocaldispersivepower,avalueusedinopticaldesign,expressedmathematicallyas:Abbe´value5~nd21!/~nF2nC!wherendistherefractiveindexfortheheliumlineat587.6nmandnFandnCaretherefractiveindicesforthehydrogenlinesat486.1and656.3nm,respectively.Seesyn-onymoustermnu-valueandrelatedtermdispersion.acidpolishing—thepolishingofaglasssurfacebyacidtreatment.airbells—bubblesofirregularshapeformedgenerallyduringthepressingormoldingoperationsinthemanufactureofopticalglass.alabasterglass—amilky-whiteglassthatdiffuseslightwith-outfierycolor.alcove—anarrowchanneltoconveymoltenglassfromrefinertoforehearthortotherevolvingpotwhereitisgatheredbytheOwen...
